Leifert Induction industrial heating systems and generators

Leifert Induction systems: air-cooled Series PSI middle frequency generators 10 to 60 kW, planar heating tables, flexible coils, and type K thermocouple modules.

Leifert middle frequency generators PSI series 10 to 60 kW

Air-cooled Leifert PSI generators utilizing advanced IGBT transistor technology deliver dependable induction heating for ferromagnetic workpieces. Models PSI 15, PSI 30, PSI 40, and PSI 60 operate across 10 to 25 kHz on three-phase lines up to 550 V, supporting continuous duty S1 operation.

Power outputs from 10 to 60 kW with adjustable electrical parameters for process tuning
Forced air ventilation design removing excess heat without liquid cooling connections
Configurable temperature ramping profiles and automated multi-channel timer controls
Rigid IP40 industrial enclosure with multi-generator synchronization for massive jobs

Leifert preheating induction tables and planar heating plates

Leifert planar induction tables incorporate horizontal coil windings engineered for uniform heating of roller bearing rings, gear rings, and discs. Heat conducts upwards through the workpiece base, preventing localized hot spots and maintaining structural metallurgical stability.

Planar coil architecture delivering uniform eddy current heating across bottom workpiece faces
Optimized magnetic coupling tailored for gear rims, thrust rings, and precision inner races
Sturdy work plate with heat-resistant insulation layer protecting shop floor operators
Rapid thermal expansion for shrink fitting without distorting precision bearing surfaces

Leifert flexible induction cables for weld seams and tubulars

Leifert flexible induction cables provide indispensable heating performance on massive workpieces with complex geometry. Widely used for thermal preparation of pipeline weld joints, offshore wind turbine sections, and shells, these flexible conductors wrap easily around irregular shapes.

High flexibility conductor layout for winding around tubular housings, shafts, and curved seams
Preheating and interpass temperature maintenance preventing hydrogen cracking in alloy joints
Wear-resistant thermal insulation jacket built for harsh pipeline and wind power field jobs
Minimal setup and configuration time across prototype trials and irregular structures

Leifert inner field and outer field custom induction coils

Dedicated Leifert inner and outer field coils deliver focused electromagnetic heat with high electrical efficiency. Inner field coils surround workpieces from outside, while outer field inductors slide into internal bores of sleeves and drums to loosen tight shrink-fit connections.

Inner magnetic field inductors providing superior electrical efficiency and rapid heating
Outer field bore inductors engineered for internal expansion of rings, hubs, and sleeves
Precision calculated coil gap geometry adapted to specific bearing journal dimensions
Non-destructive dismantling of heavy rolling mill bearings and railway axle journal rings

Leifert temperature monitoring modules and type K probes

Leifert hardware temperature management units guarantee strict adherence to prescribed thermal profiles during heating. Dual type K thermocouple ports enable continuous monitoring of thermal gradients across parts, automatically modulating generator power to avoid metallurgical stress.

Dual-channel type K thermocouple probe ports for tracking differential heating gradients
Automatic closed-loop power throttle once target shrink temperature threshold is reached
Configurable ramp rate and dwell duration programming eliminating thermal shock hazards
Integration with digital industrial data loggers and handheld thermal imaging equipment

Leifert equipment systems for bearing and coupling shrink fitting

Specialized Leifert heating systems provide controlled thermal expansion for assembling and dismantling heavy rolling bearings, gearwheels, and shaft couplings. Inductive heating eliminates open flames and messy oil baths while guaranteeing uniform dimensional expansion across precision rings.

Non-destructive mounting and dismounting of heavy industrial bearings without raceway damage
Clean thermal processing eliminating open flames, torches, and hazardous oil heating baths
High cycle repeatability preserving metallurgical tolerances on precision mechanical parts
Widely deployed across wind turbine plants, rolling mills, railway workshops, and heavy engineering

Technological engineering and German quality standards of Leifert Induction

German engineering precision and high manufacturing standards define the induction heating systems developed by Leifert Induction in Oldenburg. Comprehensive internal manufacturing depth covers computer-aided 3D modeling, precision CNC milling, and inductor coil winding.

Utilizing modern power semiconductors built on IGBT transistor architecture enables Series PSI generators to achieve high electrical efficiency while keeping enclosure dimensions compact.

Forced air cooling powered by heavy-duty ventilation fans eliminates any requirement for external water cooling infrastructure, avoiding plant floor clutter and removing risks associated with fluid leaks around energized electrical gear.

Design parameters and power ratings of Series PSI middle frequency generators

The industrial generator portfolio engineered by Leifert spans power outputs from 10 kW to 60 kW across operating frequencies between 10 kHz and 25 kHz. Standard generator sizes PSI 15, PSI 30, PSI 40, and PSI 60 operate reliably on three-phase lines up to 550 V at 50 or 60 Hz.

Built for continuous duty S1 operation, these units support demanding round-the-clock plant schedules without thermal derating. Digital microprocessor control facilitates programmable multi-step temperature ramping, steady-state target dwell, or simple timer duration modes.

In addition, multi-generator synchronization capabilities allow operators to combine power units for exceptionally massive workpieces.

Coil topologies for focused thermal processing of precision components

Leifert induction coils are individually designed to match the geometric contours and thermal mass of specific workpieces. Planar induction tables direct electromagnetic flux upwards, providing uniform heat across flat bearing rings, thrust washers, and gear blanks.

Inner field inductors surround the outside of cylindrical components to maximize electromagnetic energy coupling efficiency. For internal bores and hub sleeves, outer field inductors slide smoothly inside deep holes to expand parts rapidly.

Careful calculation of the magnetic air gap between copper windings and the workpiece ensures uniform heating without triggering localized thermal stress gradients.

Flexible induction cables for field assembly and pre-weld heat treatment

Flexible air-cooled induction cables from Leifert offer an adaptable technical solution for heating massive structural components with irregular geometries.

These flexible conductors see widespread deployment across wind turbine tower erection, pipeline installation, and vessel fabrication to preheat joint seams prior to welding.

Uniform electromagnetic heating along the heat-affected zone reduces weld cooling rates, preventing martensitic embrittlement and hydrogen-induced cracking in alloy steels.

High-temperature insulation withstands repetitive bending and direct contact with hot metal, ensuring fast equipment mobilization on remote job sites.

Closed-loop thermal management and safety in shrink-fit mounting

Process temperature management in Leifert systems relies on continuous feedback from dual type K thermoelectric sensor probes.

Connecting two independent thermocouples allows operators to verify temperature gradients between inner and outer component faces, preventing overheating or microstructure alterations in hardened alloys.

Once the target shrink-fitting temperature is reached, the controller throttles generator power or enters temperature stabilization.

Eliminating open flames, gas torches, and hazardous oil heating baths significantly improves workplace safety while meeting strict environmental and fire safety regulations.

Heavy industry deployments across wind energy, railways, and steel rolling mills

Leifert Induction systems have demonstrated dependable performance across wind energy, railway maintenance depots, and heavy steel rolling mills. In wind turbine manufacturing plants, induction systems mount spherical roller bearings onto main rotor shafts and preheat tubular foundation pilings.

In locomotive workshops, custom inductors facilitate rapid, non-destructive removal of inner bearing rings and labyrinth rings from wheelset axle journals without scratching ground shaft seats.

In rolling mills, the equipment enables scheduled replacement of worn roll couplings, roll neck sleeves, and heavy chock bearings.

Leifert Induction and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Leifert Induction and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.